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Suppose that the first scores for a particular college entrance exam are distributed according to a...

Suppose that the first scores for a particular college entrance exam are distributed according to a bell-shaped, symmetric distribution with a mean of 450 and variance of 10,000.

a) what percent of the students who take the exam score between 350 and 650?

b) any student who scores higher 550 is automatically admitted to the colleges. what percent of the students who take the exam are automatically admitted to the college?

c) what percent of the students who take the exam score between 250 and 350?

Math   Statistics-And-Probability   
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